Volume 135, Issue 40 e202311543
Forschungsartikel

Janus-Type ESIPT Chromophores with Distinctive Intramolecular Hydrogen-bonding Selectivity

Dr. Yahui Chen

Dr. Yahui Chen

State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 211816 Nanjing, China

Department of Chemistry and Nanoscience, Ewha Womans University, 03760 Seoul, Korea

New and Renewable Energy Research Center, Ewha Womans University, 03760 Seoul, Korea

These authors contributed equally to this work.

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Dr. Sheng Lu

Dr. Sheng Lu

State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 211816 Nanjing, China

These authors contributed equally to this work.

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Syed Ali Abbas Abedi

Syed Ali Abbas Abedi

Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road, 487372 Singapore, Singapore

These authors contributed equally to this work.

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Minseok Jeong

Minseok Jeong

Department of Chemistry and Research Institute for Natural Science, Korea University, 02841 Seoul, Korea

These authors contributed equally to this work.

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Dr. Haidong Li

Dr. Haidong Li

School of Bioengineering, Dalian University of Technology, 2 Linggong Road, Hi-tech Zone, 116024 Dalian, China

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Prof. Myung Hwa Kim

Prof. Myung Hwa Kim

Department of Chemistry and Nanoscience, Ewha Womans University, 03760 Seoul, Korea

New and Renewable Energy Research Center, Ewha Womans University, 03760 Seoul, Korea

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Prof. Sungnam Park

Corresponding Author

Prof. Sungnam Park

Department of Chemistry and Research Institute for Natural Science, Korea University, 02841 Seoul, Korea

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Prof. Xiaogang Liu

Corresponding Author

Prof. Xiaogang Liu

Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road, 487372 Singapore, Singapore

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Prof. Juyoung Yoon

Corresponding Author

Prof. Juyoung Yoon

Department of Chemistry and Nanoscience, Ewha Womans University, 03760 Seoul, Korea

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Prof. Xiaoqiang Chen

Corresponding Author

Prof. Xiaoqiang Chen

State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 211816 Nanjing, China

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First published: 21 August 2023
Citations: 2

Abstract

Excited-state intramolecular proton transfer (ESIPT)-based solid luminescent materials with multiple hydrogen bond acceptors (HBAs) remain unexplored. Herein, we introduced a family of Janus-type ESIPT chromophores featuring distinctive hydrogen bond (H-bond) selectivity between competitive HBAs in a single molecule. Our investigations showed that the central hydroxyl group preferentially forms intramolecular H-bonds with imines in imine-modified 2-hydroxyphenyl benzothiazole (HBT) chromophores but tethers the benzothiazole moiety in hydrazone-modified HBT chromophores. Imine-derived HBTs generally exhibit higher fluorescence efficiency, while hydrazone-derived HBTs show a reduced overlap between the absorption and fluorescence bands. Quantum chemical calculations unveiled the molecular origins of the biased intramolecular H-bonds and their impact on the ESIPT process. This Janus-type ESIPT chromophore skeleton provides new opportunities for the design of solid luminescent materials.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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